/*
 * Copyright (C) 2010-2018 Gordon Fraser, Andrea Arcuri and EvoSuite
 * contributors
 *
 * This file is part of EvoSuite.
 *
 * EvoSuite is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3.0 of the License, or
 * (at your option) any later version.
 *
 * EvoSuite is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
 */
package org.evosuite;

import org.evosuite.ga.Chromosome;
import org.evosuite.ga.stoppingconditions.StoppingConditionImpl;
import org.evosuite.utils.LoggingUtils;
import sun.misc.Signal;
import sun.misc.SignalHandler;

/**
 * <p>
 * ShutdownTestWriter class.
 * </p>
 *
 * @author Gordon Fraser
 */
@SuppressWarnings("restriction")
public class ShutdownTestWriter<T extends Chromosome<T>> extends StoppingConditionImpl<T> implements SignalHandler {

    private static final long serialVersionUID = -5703624299360241009L;

    private static boolean interrupted = false;

    public ShutdownTestWriter() {
        // empty constructor
    }

    public ShutdownTestWriter(ShutdownTestWriter<?> that) {
        // empty copy constructor
    }

    @Override
    public ShutdownTestWriter<T> clone() {
        return new ShutdownTestWriter<>(this);
    }

    /* (non-Javadoc)
     * @see sun.misc.SignalHandler#handle(sun.misc.Signal)
     */

    /**
     * {@inheritDoc}
     */
    @Override
    public void handle(Signal arg0) {
        LoggingUtils.getEvoLogger().info("\n* User requested search stop");

        // If this is the second Ctrl+C the user _really_ wants to stop...
        if (interrupted)
            System.exit(0);
        interrupted = true;
    }

    /**
     * <p>
     * isInterrupted
     * </p>
     *
     * @return a boolean.
     */
    public static boolean isInterrupted() {
        return interrupted;
    }

    /* (non-Javadoc)
     * @see org.evosuite.ga.stoppingconditions.StoppingCondition#isFinished()
     */

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean isFinished() {
        return interrupted;
    }

    /* (non-Javadoc)
     * @see org.evosuite.ga.stoppingconditions.StoppingCondition#reset()
     */

    /**
     * {@inheritDoc}
     */
    @Override
    public void reset() {
        // interrupted = false;
    }

    /* (non-Javadoc)
     * @see org.evosuite.ga.stoppingconditions.StoppingCondition#setLimit(int)
     */

    /**
     * {@inheritDoc}
     */
    @Override
    public void setLimit(long limit) {
        // TODO Auto-generated method stub

    }

    /* (non-Javadoc)
     * @see org.evosuite.ga.stoppingconditions.StoppingCondition#getLimit()
     */

    /**
     * {@inheritDoc}
     */
    @Override
    public long getLimit() {
        // TODO Auto-generated method stub
        return 0;
    }

    /* (non-Javadoc)
     * @see org.evosuite.ga.stoppingconditions.StoppingCondition#getCurrentValue()
     */

    /**
     * {@inheritDoc}
     */
    @Override
    public long getCurrentValue() {
        // TODO Auto-generated method stub
        return 0;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void forceCurrentValue(long value) {
        // TODO Auto-generated method stub
        // TODO ?
    }

}
